Source note · Connecting Unified CM to Five9

Five9's port list for PSTN-station customers covers agents that need no RTP connection and contains only TCP web, RMI, download and test ports plus UDP 8090 for voice simulation tests.

Checked 2026-09-25

If your agents use a PSTN connection but no RTP connection is required, be sure that these TCP and UDP ports allow traffic

Vendor: Five9
Product: Five9 Virtual Contact Center
Subsystem: network
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-25
Checked: 2026-09-25

Sources

TCP/UDP Port Requirements for PSTN Customers — Five9 · tier 2 current vendor documentation · TCP/UDP Port Requirements for PSTN Customers, opening sentence and table

Cite this note

APA

WarmTransfer. (2026, September 25). Connecting Unified CM to Five9: source note cucm-with-five9-pstn-ports-no-rtp. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-with-five9-pstn-ports-no-rtp

BibTeX

@misc{warmtransfer-claim-cucm-with-five9-pstn-ports-no-rtp,
  title  = {Connecting Unified CM to Five9: source note cucm-with-five9-pstn-ports-no-rtp},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-with-five9-pstn-ports-no-rtp},
  note   = {Source note cucm-with-five9-pstn-ports-no-rtp, checked 2026-09-25}
}

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